Process for the preparation of 2-(2,4-dichlorophenoxy)-phenylacetic acid
申请人:Reckitt & Colman Products Limited
公开号:US04404396A1
公开(公告)日:1983-09-13
Process for the preparation of 2-(2,4-dichlorophenoxy)phenylacetic acid in which the potassium salts of 2-chlorophenylacetic acid and 2,4-dichlorophenol are reacted in aromatic hydrocarbon solvents at elevated temperatures in the presence of a copper chloride catalyst, followed thereafter by acidification.
[CuL(N3)]2 (2) have been obtained by reacting HL with Cu(II) salts. Under visible light irradiation, these catalysts can cleave the CC bonds of lignin in H2O as suggested by HPLC data. After completion of the reaction, the photo-catalysts could be recovered almost quantitatively and recycled for at least six times without much decrease in the catalytic efficiency. A plausible mechanistic pathway for the
Process for the preparation of 2-(2,4-dichlorophenoxy) phenylacetic acid
申请人:RECKITT AND COLMAN PRODUCTS LIMITED
公开号:EP0057047A1
公开(公告)日:1982-08-04
Process for the preparation of 2-(2,4-dichloro- phenoxy)phenylacetic acid in which the potassium salts of 2-chlorophenylacetic acid and 2,4-dichlorophenol are reacted in aromatic hydrocarbon solvents at elevated temperatures in the presence of a copper chloride catalyst, followed thereafter by acidification.
Process for the preparation of 2-(2,4-dichlorophenoxy)phenylacetic acid
申请人:Technobiotic Ltd.
公开号:EP0068222A1
公开(公告)日:1983-01-05
Process for the preparation of 2-(2,4-dichlorophenoxy)-phenylacetic acid (a compound having useful anti-inflammatory properties) by reacting a 2-halo-phenylacetic acid or a salt thereof under basic conditions in the presence of metallic copper with 2,4-dichlorophenol or a salt thereof.